OpenAI
GPT-5.4 Mini
- Benchmark records
- 3
- Snapshot
- 2026-07-17
Independent model comparison
GPT-5.4 Mini vs GPT-5.6 Luna: evidence side by side
Compare the models using only evidence that can be identified and attributed. Exact benchmark matches appear first; independent facts and user reports remain separate and do not create an overall ranking.
Exact comparison coverage
1 benchmark record share an exact reviewed comparison key.
Evidence strength
Limited exact coverage
The page is useful for inspection but does not yet contain enough pair-native evidence for Search publication.
Models at a glance
Key differences
OpenAI
GPT-5.6 Luna
- Benchmark records
- 7
- Snapshot
- 2026-07-30
| Detail | GPT-5.4 Mini | GPT-5.6 Luna |
|---|---|---|
| Provider |
OpenAI |
OpenAI |
| Release date Shown only where an exact reviewed release date is available. |
Not verified |
Not verified |
| Exact benchmark coverage Only records carrying the same reviewed comparison identity are counted. |
1 shared record |
1 shared record |
Price and speed appear only when an exact reviewed operational reference is attached to that model identity.
Primary comparison evidence
Exact matched benchmark evidence
A shared benchmark name is not enough. A result appears side by side only when both model records carry the same reviewed comparison key. Duplicate or unversioned records are omitted rather than guessed into alignment.
ROASBench
A 12-month performance-marketing simulation scored on business outcomes, planning, behavior, and persona fit.
GPT-5.4 Mini
11.83
Average ROASBench score
Configuration: OpenAI: GPT-5.4 Mini
Spring Prompt · Reviewed public-catalogue SQLite projection · 12-month simulation
GPT-5.6 Luna
4 configurations
Average ROASBench score
Configuration: 4 configurations compared separately
Spring Prompt · Reviewed public-catalogue SQLite projection · 12-month simulation
Secondary context · not head-to-head
Independent signals for each model
The sources below evaluated or discussed each model independently. Putting them in adjacent columns makes them easier to inspect, but it does not make their metrics, samples, or observations directly comparable.
No editor-reviewed model-level signals are attached to this comparison snapshot.
How to read this comparison
Spring Prompt does not name an overall winner from unrelated benchmark scores, third-party metrics, Reddit opinions, or X field-test reports.
Different benchmarks measure different constructs and may use different populations, prompts, harnesses, model revisions, tools, and score scales. This page does not average those values or infer a winner from source coverage. Test both models on your own production work before making a consequential choice.